Abstract:
The current invention relates to a magnetic pole assembly, providing flux to an air gap, comprising one or more magnetic pole pieces and one or more sources of magnetic flux. Said one or more sources of magnetic flux lie adjacent to the axial faces and circumferential faces and one of the radially inner face or radially outer face of each magnetic pole piece. Thereby to allow flux created by said one or more sources of magnetic flux to enter the one or more magnetic pole pieces in order to focus the magnetic flux of said pole piece towards and out of the radial surface not having a source of magnetic flux adjacent thereto. Such an arrangement, increases the flux density in the air gap adjacent to said radial surface not having a source of magnetic flux adjacent thereto.
Abstract:
Die vorliegende Erfindung betrifft eine elektrische Synchronmaschine für ein schienenloses Fahrzeug. Das Fahrzeug weist Antriebsräder auf und die Synchronmaschine ist dazu eingerichtet, an den Antriebsrädern ein einen Vortrieb des Fahrzeugs bewirkendes Drehmoment zu erzeugen. Die Synchronmaschine weist einen Stator und einen um diesen rotierenden Rotor auf, wobei der Stator eine zum Ausbilden eines rotierenden Statormagnetfelds zumindest dreiphasig aufgebaute Statorwicklung aufweist, und wobei der Rotor zumindest eine zum Ausbilden eines Rotormagnetfelds ausgebildete Rotorwicklung aufweist. Die Erfindung betrifft ferner ein Verfahren zum zumindest teilumfänglichen Herstellen einer stromerregten Synchronmaschine, mit folgenden Schritten: Bereitstellen eines Rotorjochs, Bereitstellen einer Vielzahl von Rotorpolen, Befestigen der Rotorpole an dem Rotorjoch zum Ausbilden eines Rotors, Bereitstellen eines Stators, und Einbringen des Stators in den Rotor.
Abstract:
Electric machine comprising a stator and a rotor, wherein the rotor is adapted to rotate relatively to the stator, and wherein the rotor comprises a rotor-switching- device which is arranged at the rotor.
Abstract:
The present disclosure relates to a synchronous electrical machine (1) that is adapted to alternately work as an electric generator or as an electric motor. The synchronous electrical machine (1) comprises a rotor (2), that is provided with a main rotor winding (25) configured to cooperate with a main stator winding (15), and an excitation system (3) for exciting the main rotor winding (25) to a production of a main rotor magnetic field. The excitation system (3) comprises a first exciter (31), which in the specific case is of conventional type in direct current, and a second exciter (32), which in the specific case is in alternating current. The first exciter (31) is operational when the synchronous electrical machine (1) works as electric generator and it is non-operational when the synchronous electrical machine (1) works as a motor. The second exciter (32) is operational when the synchronous electrical machine (1) works as a motor, by guaranteeing excitation power at each speed; the second exciter (32) is non-operational when the synchronous electrical machine (1) works as electric generator.
Abstract:
An electric maschine comprises a stator (12) and a rotor (14). The stator (12) has a stator core (26), and stator windings (28u, 28v, 28w) wound around either the stator core (26) or stator teeth (30). The rotor (14) has a rotor core (16), windings (42n, 42s) wound around either the rotor core (16) or rotor teeth (19), and magnetic auxiliary poles (48) disposed between two rotor teeth (19) being adjacent in circumferential direction. The rotor (14) further comprises diodes (21n, 21s) that cause magnetic characteristics, such as the direction of the induced current, to vary in circumferential direction of the rotor core (16).
Abstract:
Machine électrique (1) à commutation de flux à simple excitation, comportant des bobinages d'excitation (E) et des bobinages de phases (A, B, C), les bobinages d'excitation et les bobinages de phases étant logés dans des encoches respectives (3, 5) du stator, de formes inégales, de telle sorte que les bobinages d'excitation et de phases soient décalés radialement.
Abstract:
A dynamo-electric machine is so constituted as to easily change the characteristics of a dynamo-electric machine comprising permanent magnets and comprises a field control coil so as to adopt the dynamo-electric machine comprising common components to various applications. In this dynamo-electric machine, the field control coil is so adopted to a field which a magnetic pole and an iron pole supply to core teeth so as to superpose magnetic fluxes of different strengths. A permanent magnet is disposed in a recess of the inner peripheral face of a yoke to form a magnetic pole by a permanent magnet, and an iron pole by a yoke section between adjacent permanent magnets, and the inner peripheral face of the permanent magnet is located below the yoke section, thereby differentiating the strengths of magnetic fluxes.
Abstract:
The invention relates to a drive system (1) with electromagnetic energy transfer. The system (1) comprises a track (3) comprising a plurality of stators (4), each stator (4) having at least one winding adapted to generate a magnetic field having a fundamental harmonic (8) and at least one further harmonic (9) when fed with an varying current, and a movable element (2) comprising a primary magnetic element (5) adapted to receive said fundamental harmonic (8) to drive said movable element (2) along said track. The system (1) is characterized in that said movable element (2) further comprises a secondary magnetic element (6a-6c) adapted to receive said at least one further harmonic (9) to generate power onboard of said movable element (2). The invention also relates to a linear fractional slot synchronous machine and a rotational synchronous machine.